ASTRIL-MPC:言語誘導型ニューラル運動学MPCによる関節式クローラロボットの自律走行フレームワーク
ASTRIL-MPC: Autonomous Traversal Framework of Articulated Tracked Robots with Language-Guided Neural-Kinematic MPC
関節式クローラロボットの階段や瓦礫環境での自律走行のため、学習した運動学モデルとMPC、LLMによるパラメータ調整を組み合わせた制御フレームワークを提案し、衝突を抑えつつ走行品質を大幅に改善した。
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著者: Zhenfeng Gan, Yanbo Chen, Lirong Che, Junbo Tan, Xueqian Wang
分類: cs.RO, cs.AI
原文アブストラクト
In urban search and rescue, articulated tracked robots (ATRs) must traverse structured but contact-rich environments such as stairwells and cluttered building interiors. Reliable autonomy remains challenging because robot-terrain interaction (RTI) is hybrid and discontinuous, and effective flipper-track coordination is difficult to model analytically. We present ASTRIL-MPC, a language-guided neural kinematics model predictive control (MPC) framework for autonomous traversal. A learned kinematics model predicts short-horizon task-state increments from a height sequence and recent trajectories; NMPC plans with multi-objective costs and strict feasibility constraints; and a large language model (LLM) proposes bounded updates to selected weights and bounds through a safety-checked interface with range clipping, rate limiting, and consistency checks. The compiled predictor enables a full control cycle within 100 ms. Across three traversal tasks and a multi-height generalization setting, ASTRIL-MPC improves an aggregate traversal-quality score by up to 71% over a non-adaptive NMPC and by 67% over a PPO baseline, while eliminating measurable collision impacts during descent. These results indicate that combining learned kinematics, optimization-based planning, and language-guided retuning yields data-efficient and robust autonomy for articulated tracked robots.